Article
Polymer Science
Carlos Perez-Valdez, Guillermina Burillo, Rodrigo Navarro, Angel Marcos-Fernandez
Summary: PBS and PBSA were irradiated with gamma radiation up to a dose of 400 kGy, resulting in the formation of gel content. PBSA exhibited higher gel content compared to PBS. Analysis revealed that chain scission predominated over crosslinking. Branching and chain scission increased the dispersity and affected the molecular weight. NMR analysis showed the appearance of new species and changes in species with increasing dose. The thermal properties, especially crystallization temperature, were significantly affected by irradiation. Mechanical properties of both polymers were greatly reduced, making them fragile even at low doses.
Article
Polymer Science
Yaqing Shang, Zhiguo Jiang, Zhaobin Qiu
Summary: Novel biobased and biodegradable PBS-b-PBSe multiblock copolymers were successfully synthesized with high thermal stability. The two blocks crystallized separately in both amorphous and crystalline phases. The mechanical properties of the copolymers were significantly improved compared to homopolymers.
Article
Polymer Science
Maryam Safari, Ricardo A. Perez Camargo, Laura Ballester-Bayarri, Guoming Liu, Agurtzane Mugica, Manuela Zubitur, Dujin Wang, Alejandro J. Mueller
Summary: This study explores the possibility of blending PBS and PCL with BSxCLy copolymers and systematically studies the crystallization behavior of the blends. The results show that the PBS/BS78CL22 blend exhibits good miscibility at high PBS content, while the PCL/BS15CL85 blend still displays partial miscibility at high PCL content. The BS46CL54 copolymer can crystallize in both PBS and PCL type crystals, depending on the polymeric matrix.
Review
Polymer Science
S. Ayu Rafiqah, Abdan Khalina, Ahmad Saffian Harmaen, Intan Amin Tawakkal, Khairul Zaman, M. Asim, M. N. Nurrazi, Ching Hao Lee
Summary: Research shows that PBS-based natural fiber composites have good biodegradability and strong physical properties, offering great potential in replacing petroleum-based materials. Current research efforts focus on the synthesis, copolymers, and degradability of PBS, providing new insights and approaches for the development in this field.
Article
Polymer Science
K. S. Savitha, M. Senthil Kumar, R. L. Jagadish
Summary: The chemo-selectivity of titanium tetrabutoxide in the polycondensation step of poly(butylene succinate) (PBS) synthesis has been enhanced by activating the free terminal carboxylic acids in PBS oligomer using trialkyl borates. The addition of trialkyl borates is expected to convert the free terminal carboxylic acid groups in PBS oligomer into a highly reactive acyloxy boron intermediate, leading to improved selectivity of titanium tetrabutoxide towards trans-esterification reaction and higher molecular weight PBS.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2023)
Article
Polymer Science
Yi Li, Guoyong Huang, Cong Chen, Xue-Wei Wei, Xi Dong, Wei Zhao, Hai-Mu Ye
Summary: By incorporating AD units into PBS chains, the crystallization temperature and crystallinity of PBS can be depressed, while the primary nucleation capability is significantly strengthened without altering crystal modification or crystallization kinetics. The presence of specific interactions among AD units is crucial for the performance of PBSAD, and further investigation may lead to the design of superior PBS copolymers in the future.
Article
Polymer Science
Maria Nunez, Sebastian Munoz-Guerra, Antxon Martinez de Ilarduya
Summary: This study investigates the enzymatic synthesis of poly(butylene-co-epsilon-caprolactone) copolyesters for the first time, demonstrating high thermal stability and semicrystalline properties. The use of Candida antarctica lipase B resulted in copolyesters free from toxic metallic catalysts, making them potential candidates for biomedical applications.
Article
Polymer Science
K. S. Savitha, M. Senthil Kumar, R. L. Jagadish
Summary: The use of titanium tetraalkoxide in combination with trialkyl borate as a catalyst system for the synthesis of high molecular weight PBS is reported. It is found that the addition of trialkyl borates during the polycondensation reaction leads to the formation of high molecular weight PBS. This may be attributed to the activation of free terminal carboxylic acids in PBS oligomer by trialkyl borates via the formation of highly reactive acyloxyboron intermediate. A plausible mechanism for the activation of free terminal carboxylic acids by trialkoxy borates is also proposed.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Review
Polymer Science
Massimiliano Barletta, Clizia Aversa, Muhammad Ayyoob, Annamaria Gisario, Kotiba Hamad, Mehrshad Mehrpouya, Henri Vahabi
Summary: The development of biodegradable and compostable materials, such as polybutylene succinate (PBS), as alternatives to fossil-based plastics is highly important. PBS is a compostable aliphatic polyester with good mechanical strength and thermal resistance. However, it is often blended with other polymers, fillers, and additives to improve processability and mechanical performance. Recent advances in polymer blending processes have made PBS blends an interesting material platform for applications requiring a balance of mechanical strength, flexibility, thermal resistance, and compostability.
PROGRESS IN POLYMER SCIENCE
(2022)
Article
Polymer Science
Moein Zarei, Miroslawa El Fray
Summary: Polymeric materials have a wide range of applications due to their controllable properties. In this study, a series of PBS-DLS-PEG copolymers were synthesized with different molecular weights of PEG to investigate their surface and thermal properties. The incorporation of higher molecular weight PEG improved the surface wettability of the materials while maintaining their thermal properties.
Article
Polymer Science
Zhipeng Sun, Zhiguo Jiang, Zhaobin Qiu
Summary: In this research, the thermal, crystallization, and mechanical properties of branched PBS copolymers (PBDS) were systematically investigated and it was found that branching did not modify the crystallization mechanism, but significantly improved the elongation at break and decreased the Young's modulus and tensile strength of the copolymers.
Article
Polymer Science
Masrat Rasheed, Mohammad Jawaid, Bisma Parveez
Summary: This study investigates the effects of cellulose nanocrystals (CNC) from bamboo fiber on the properties of poly (lactic acid) (PLA)/poly (butylene succinate) (PBS) composites. The addition of CNC improves the thermal stability, tensile strength, and modulus of the composite, while reducing elongation at break.
Article
Polymer Science
K. S. Savitha, M. Senthil Kumar, R. L. Jagadish
Summary: A new tin and titanium based catalyst combination has been discovered for synthesizing high molecular weight poly(butylene succinate). The new catalyst system shows higher efficiency and better hydrolytic and thermal stability, even at 250 degrees Celsius. Moreover, this catalyst system is capable of producing high molecular weight poly(butylene succinate) polymer in good yield even at lower temperatures.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2023)
Article
Polymer Science
Wen Lin, Yujin Zhao, Tingting Su, Zhanyong Wang
Summary: The degradation behavior of PBAT films by different concentrations of Fusarium solani cutinase (FsC) was investigated. It was found that FsC could degrade both the amorphous region and the crystalline region of PBAT films, and its degradation activity was concentration-dependent. High concentration of FsC resulted in significant degradation of PBAT films, while low concentration had less apparent effect. FsC concentration and degradation time did not significantly affect the molecular weight of degraded PBAT.
POLYMER DEGRADATION AND STABILITY
(2023)
Article
Polymer Science
Xun Li, Min Xia, Xin Dong, Ren Long, Yuanhao Liu, Yiwan Huang, Shijun Long, Chuanqun Hu, Xuefeng Li
Summary: The structure, morphology, fracture toughness, and flaw sensitivity length scale of chain-extended poly(butylene succinate) were investigated. The results show that chain extension can significantly improve the toughness of the polymer and reduce the notch sensitivity. This principle can be applied to other high toughness material systems.
Article
Materials Science, Paper & Wood
Yong Zhang, Mei Yang, Yuan Zhou, Anrong Yao, Yanting Han, Yidong Shi, Fei Cheng, Mi Zhou, Puxin Zhu, Lin Tan
Summary: A sandwich Janus membrane was constructed through sequential electrospinning, which showed good mechanical properties, high permeability and selective separation ability. The CA/PU transition layer improved the interfacial compatibility and enhanced the membrane performance.
Article
Materials Science, Ceramics
Jianyu Zhai, Ce Cui, Ang Li, Ronghui Guo, Cheng Cheng, Erhui Ren, Hongyan Xiao, Mi Zhou, Jinwei Zhang
Summary: This study prepared waste cotton cellulose aerogels and deposited MXene nanosheets on their surface to obtain WCF/MXene composite aerogels. The composite aerogels exhibited excellent electromagnetic shielding effectiveness and heat generation property, which can be used for electromagnetic shielding, electrical heating, and high temperature protection.
CERAMICS INTERNATIONAL
(2022)
Article
Medicine, Research & Experimental
Mi Zhou, Deepti Chittamuru, Sandie Ha, Dean Schillinger, Susana Ramirez
Summary: This study, based on the ecological approach to communication, aims to test the effectiveness of message tailoring and format in promoting positive dietary behaviors among young adult Latinas. The research will be conducted through two experiments using different infographics and comic books, and the outcomes measured include intention to reduce sugar-sweetened beverage consumption, understanding of determinants of health, and empowerment. The study seeks to provide empirical evidence for communication strategies that can help young Latinos pursue healthier lifestyles and contribute to the change of social norms.
CONTEMPORARY CLINICAL TRIALS
(2022)
Article
Environmental Sciences
Gang Chen, Mi Zhou, Shixiang Gu, Jinming Chen, Lei Wu
Summary: This study compared the applicability of six albedo models in different regions of China through statistical analysis. The results showed that ZeM model performed the best among the selected 12 stations, while IeM model provided acceptable estimations in locations where albedo data is readily available. Additionally, the number of input parameters is not the sole key factor in determining the predictive performance of ground albedo models.
Article
Environmental Sciences
Peng Wang, Min Wang, Mi Zhou, Jianjun He, Xiangzhao Feng, Xiaolin Du, Yu Wang, Yongli Wang
Summary: This study used simulations to assess the impact of the coal-to-gas/electricity conversion project on air quality in the Beijing-Tianjin-Hebei region. It found that the project has a significant effect on improving air quality, especially in the plain area. Moreover, the effects of meteorological conditions on air quality are comparable or even larger than those of the project.
Article
Engineering, Civil
Kewei Liu, Megan Walske, Mi Zhou, Xihong Zhang
Summary: The use of rammed earth as a construction material has gained attention for its sustainability and low-cost potential. However, the mechanical performance of stabilized rammed earth, particularly under dynamic loading, is not well understood. This study experimentally investigates the quasi-static and dynamic material properties of cement and calcium carbonate residue stabilized rammed earth, and derives empirical formulae for the dynamic increase factor.
INTERNATIONAL JOURNAL OF PROTECTIVE STRUCTURES
(2023)
Article
Polymer Science
Zejian He, Haifeng Shao, Nannan Zhang, Jie Li, Hai Xiao, Tianhang Weng, Mi Zhou, Bianying Wen, Yulong Chen
Summary: This study designed and synthesized three amide nucleating agents with different symmetries to investigate the effect of symmetry on PLLA crystallization. It was found that the C3 symmetric amide structure exhibited the best performance as an efficient nucleation site.
JOURNAL OF POLYMER SCIENCE
(2023)
Review
Engineering, Environmental
Huijuan Wu, Weiqiong Zheng, Ran Zhu, Mi Zhou, Xiancheng Ren, Yinghan Wang, Chong Cheng, Hongju Zhou, Sujiao Cao
Summary: This article comprehensively summarizes and discusses the most important advances in engineering MOF nanoarchitectures for efficient water electrolysis. First, the methods of modulating the coordination structures and metal atom environments of MOF and MOF-derived catalysts are reviewed, and then their applications in water splitting are discussed based on the coordination structure and local atomic environment.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Bing Yang, Mi Zhou, Yuan Meng, Keming Chen, Jie Xu, Xiangfu Huang, Yucheng Liu, Lingli Li, Lili Ma, Mingyan Chen
Summary: Chemical oxidation as a pretreatment for petroleum-contaminated soil, coupled with bioremediation, can have serious impacts on indigenous microorganisms and available nutrients. This study found that hydrogen peroxide treatments significantly promoted the removal of total petroleum hydrocarbons (TPH), especially in the initial days, and also affected the levels of dissolved nutrients. Both chemical oxidation and nutrients contribute to changes in microbial community structure and diversity. However, the long-term effects of H2O2 as a pretreatment had little impact on the soil indigenous microbial community structure and actually facilitated the continuous removal of TPH by indigenous microorganisms.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Electrical & Electronic
Runyu Fu, Jianguo Wang, Jianping Wang, Mi Zhou, Cai Li, Yating Zhao, Yadong Fan
Summary: This paper establishes a holistic model of a 500 kV GIS step-up substation equipment in a coastal power plant using the Electromagnetic Transient Program (EMTP). It investigates the VFTO waveform generated in different operations and analyzes its impact on equipment.
IET GENERATION TRANSMISSION & DISTRIBUTION
(2023)
Article
Engineering, Electrical & Electronic
Mi Zhou, Weihan Zhao, Shengquan Zheng, Yongming Guo, Zehong Yang, Jianguo Wang, Li Cai, Yadong Fan
Summary: This study establishes a simulation model to investigate the lightning inductive characteristics between parallel cables. The research findings indicate that an increase in the horizontal distance between cables leads to a decrease in the cable induced voltage. Additionally, linear correlations exist between the height difference or disturbed cable length and the cable induced voltage, reaching maximum when the cables are at the same height and of equal length.
IET SCIENCE MEASUREMENT & TECHNOLOGY
(2023)
Article
Spectroscopy
DongFei Li, Shuo Zhang, Hongsheng Jia, Mingxing Song, Ying Zhang, Haibo Li, Mi Zhou
Summary: In this study, high pressure Raman research was conducted on lithium perchlorate crystal, and it was found that the crystal undergoes phase transformations under different pressure conditions, which has significant implications for its performance.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Cardiac & Cardiovascular Systems
Haoyi Yao, Kaijie Qin, Yun Liu, Yi Yang, Jiaxi Zhu, Anqing Chen, Zhe Wang, Xiaofeng Ye, Mi Zhou, Haiqing Li, Jiapei Qiu, Qiang Zhao, Yunpeng Zhu
Summary: Individualized dual antiplatelet therapy (DAPT) based on CYP2C19 genotype and platelet aggregation test (PAgT) was associated with a lower risk of major adverse cardiovascular events (MACE) and a similar risk of major bleeding in patients undergoing off-pump coronary artery bypass graft surgery (OPCAB).
FRONTIERS IN CARDIOVASCULAR MEDICINE
(2022)
Article
Engineering, Environmental
Mei Zhang, Yuting Wen, Zhangheng Huang, Xin Qin, Mi Zhou, Dexuan Xiao, Weitong Cui, Zhiqiang Liu, Yunfeng Lin
Summary: A novel nanomedicine was developed for the treatment of rheumatoid arthritis, which carries methotrexate and uses aptamer targeting tumor necrosis factor-alpha. This targeted nanomedicine accumulates in the inflammatory joints, reducing systemic toxicity and decreasing joint damage.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Multidisciplinary
Tiantian Li, Yuting Deng, Xiao Rong, Chao He, Mi Zhou, Yuanjiao Tang, Hongju Zhou, Chong Cheng, Changsheng Zhao
Summary: This review comprehensively summarizes the main advances and applications of tellurium-based nanomaterials (Te NMs) in electrocatalysis. The engineering strategies and principles to enhance the electrocatalytic activity and stability of Te NMs are discussed, including chemical/physical/multiplex templating strategies, heteroatom doping, and phase engineering. The typical applications of Te NMs in electrocatalysis are also presented. Finally, the key issues, challenges, and development trends of Te NMs as electrocatalysts are highlighted.
